<template>
  <div>
    <!--头部-->
    <div style="height: 60px; line-height: 60px; background-color: beige; margin-bottom: 2px; display:flex ">
      <div style="width: 300px">
        <img src="@/assets/logo.png" alt="" style="width: 40px; height: 40px; position: relative; top: 10px; left: 20px">
        <span style="margin-left: 25px; font-size: 24px; color: black">图书管理系统</span>
      </div>
      <div style="flex: 1; text-align: right; padding-right: 20px">
        <el-dropdown size="medium">
          <span class="el-dropdown-link" style="cursor: pointer">
            {{admin.username}}<i class="el-icon-arrow-down el-icon--right"></i>
          </span>
          <el-dropdown-menu slot="dropdown" style="margin-top: -5px">
            <el-dropdown-item ><div style="width: 50px; text-align: center" @click="logout">退出</div></el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
      </div>
    </div>

    <!--    侧边栏和主题-->
    <div style="display: flex;">
      <!--      侧边栏导航-->
      <div style="width: 200px; min-height: calc(100vh - 62px); overflow: hidden; margin-right: 2px; background-color: rgb(179,225,157)">
        <el-menu :default-active="$route.path"  router class="el-menu-demo">
          <el-menu-item index="/">
            <i class="el-icon-s-home"></i>
            <span>首页</span>
          </el-menu-item>

          <el-submenu index="user">
            <template slot="title">
              <i class="el-icon-s-promotion"></i>
              <span>用户管理</span>
            </template>
            <el-menu-item index="/addUser">用户添加</el-menu-item>
            <el-menu-item index="/userList">用户列表</el-menu-item>
          </el-submenu>

          <el-submenu index="admin">
            <template slot="title">
              <i class="el-icon-user"></i>
              <span>管理员管理</span>
            </template>
            <el-menu-item index="/addAdmin">管理员添加</el-menu-item>
            <el-menu-item index="/adminList">管理员列表</el-menu-item>
          </el-submenu>

          <el-submenu index="category">
            <template slot="title">
              <i class="el-icon-s-operation"></i>
              <span>图书类别管理</span>
            </template>
            <el-menu-item index="/addCategory">图书类别添加</el-menu-item>
            <el-menu-item index="/categoryList">图书类别列表</el-menu-item>
          </el-submenu>

          <el-submenu index="book">
            <template slot="title">
              <i class="el-icon-notebook-1"></i>
              <span>图书管理</span>
            </template>
            <el-menu-item index="/addBook">图书添加</el-menu-item>
            <el-menu-item index="/bookList">图书列表</el-menu-item>
          </el-submenu>

          <el-submenu index="borrow">
            <template slot="title">
              <i class="el-icon-document-copy"></i>
              <span>借书管理</span>
            </template>
            <el-menu-item index="/addBorrow">借书添加</el-menu-item>
            <el-menu-item index="/borrowList">借书列表</el-menu-item>
          </el-submenu>

          <el-submenu index="backb">
            <template slot="title">
              <i class="el-icon-document"></i>
              <span>还书管理</span>
            </template>
            <el-menu-item index="/backbList">还书列表</el-menu-item>
          </el-submenu>

        </el-menu>

      </div>
      <!--      主体-->
      <div style="flex: 1; width:0;  background-color: white; padding:10px">
        <router-view/>
      </div>
    </div>
  </div>
</template>

<script>
import Cookies from "js-cookie";

export default {
  name: "Layout.vue",
  data() {
    return {
      admin:Cookies.get('admin')?JSON.parse(Cookies.get('admin')):{}
    }
  },
  methods: {
    logout() {
      this.$router.push('/login')
      //清楚浏览器用户数据
      Cookies.remove('admin')
      this.$router.push('/login')

    }
  }
}
</script>

<style>

</style>